Typewriting machine



Patented Mar. 13, 1923.

narran* staresA 1.447.990 PATENT orties'.

ALFRED e. E. yKuRowsKr, or BROOKLYN, NEW YORK, AssiGNORTo UNDERWOODTYEEWRITER COMPANY, or NEW YORK, N. Y., A CORPORATION or DELAWARE.

TYPEWRITING MACHINE.

Application inea April 9, 1921. serial N. 459,964.

Kings, city and State of New York, have invented certain new and usefulImprovements in rlypewriting Machines, of which the following is aspecification. p

This invention relates to typewriting machines 4which, are usedexclusively forl stencil-writing, such as set forth in my co-pendingapplication, Serial No. 459,618, filed April 8, 1921.

ln said co-pending application is disclosed means for simultaneouslyline-feeding a stencil at the front of the platen rotating the platen,and feeding an ink ribbonfbetween the stencil and the platen, for`malringimpressions on the rear of the stencil to render thetyped mattervisible.

One feature of the present invention comprises improved ribbon-feedingymeans whereby the life of the ribbon may be pro-y longed. F or thispurpose, there are provided two rolls, each having a ratchet-wheelattached thereto, and a double pawl member engages either ratchet-wheel.

Another feature of this invention is ,the provision of an improvedreplaceable celluloid surface on the platen. A'hard surface of this typeaids in producing sharp impressions onv the stencil, but tends to becomeworn more readily .than the Ordinary rubber'platen surface. Provision istherefore made for readily replacing the worn celluloid surface.

The stencils are generell small waxed sheets fixed to acardboard rame,andcontainonly a few lines of typing. The present invention provides forline-spacing the stencil-holding frame and the platen for severalline-spaces and then returning the frame and platen to the initialposition. It will be apparent that substantially the same portion of theplaten surface is' used each time, and that this portion will wear outwhile the remainder of the surface is Still in good condition.

Itis another feature of this invention to provide means whereby theplaten may be.

In the accompanying drawings, Figure 1 is a vertical section of anUnderwood standard typew'riting machine as modified by the invention,whichis shown` applied thereto, only the necessary co-operating elementsof the machine being' illustrated. Figure 2 is a frontview partlysectioned, of the machine shown vin Figure 1.

Figure 3 is a detailview` ofA the ribbonrolls and their mounting. i l

Figure 4l is a View similarilto I `ig`urel l, and shows the double pawlmember after a stencil has beenraised to its uppermost position, thepawl being set for co-operation with the left ribbon-roll. v y y Figure5 4is a View similar to Figure 4,

with parts omitted, and shows the double pawl member aftera stencil yhasreached the highest position, the awl beingy set for cooperation withthe rig t ribbon-roll; i'

Fi ure 6 is a detail vertical sectiorn showing t e method of attachingthefcelluloid surface to the platen.

A carriage, indicated generally bythe numeral 10, travels on theusualfrontrail (not shown) and a rearrail 11, andk comprises a shiftableplaten-frame 12 having end walls 13 and 14. The frame 12 is supported inthe usual manner by arms 15 pivoted at one end on a tie-rod 16 of thecan" riage, and supporting the frame at the other end 17. Theshift-frame is provided with a roller 18 riding on a rail 19 integralwith frame 20, the latter being pivoted on the machine at 21 androtatableby a shift-lever (not shown). The end walls of theplatenframe12 are. connected by a tie-strap 22,

to which are fixed side platesl 23` and `241 confixed on the shaft 30. Aplaten 35 is loosely mounted upon shaft- 30 between the` side y plates23 and 24, and is madepto rotate i11- tegrally with the shaft bymechanism to be hereinafter described. y i

p To the underside of the tie-strap 22are stencil-holding framecomprising side arms extending.forwardly toward the frontk ofthe pla-tenand provided with'slots 39 to clear shaft 30, the engagement of saidshaft in said slots serving tol guide the stencil-l holding frame in itsup-and-down movement, to bedescribed hereinafter. The arms 43 'broadenout toward the front of the machinea'nd support at their forward endsthe stencil-holder 44, which comprises. two U- shaped'inembers'45 'and46, spaced apart by a filler member 47, thus forming a recess into whichstencil frames may be inserted. Thesten'cil frames employed are usuallyof cardboard'or similar .material which cannot be bent to a large extentwithout breaking.V Nevertheless, it is desirable to make the stencilvconform to the curvature of the platen to some e`xte.nt,-especially atthe printing point indicated by the raised type-head 36. For thispurpose, the stencil-holder 44 is given ,a radius of curvature muchlarger than that of the platen and substantially equal to the length ofsidearms 43.

To line-space the stencil-holder upwardly,

pins and project into cam slots 56 in the arms 43, said pins being fixedto arms 52 andv 53, respectively, on hubs 50 and 51 fixed to move withshaft 30 when the latter is rotated in line-feeding direction by theline-space handle 32 or by the finger-wheels 31. Preferably, the platenis rotated upwardly simultaneously with the stencil-holding frame bymeans which connect the loosely-mounted platen to the shaft to moveintegrally therewith.V The connecting means comprises a pin 59 at theend of a leafspring 5S carried by an arm 57, which may be fixed on hub50, said pin projecting` into anopening` 62 in an arm 00 fixed to theplaten. `1 firm 57, spring' 53, arm 60, and the platen therefore rotateas a unit when the shaft is rotated. Since the typing` on a stencilgenerally occupies not more than three or four lines, and since theplaten and l stencil-holder move upwardly and downwardly together, thesame portion of t-he platen is 'used repeatedly, and that portion willIconsequently wear out rapidly and have to be replaced. Means aretherefore provided for rotating,l the platen relatively to the shaft andthe stencil-holder to bring a fresh portion lof the platen surface intouse. For thisl purpose, pin 59 may be withdrawn from opening G2 and theplaten rotated to a new position on shaft 30,pin 59 lodging in anotherope-ning 64, `whichmay be forme-d in an arm 63 similar to arm 60, butextend-v ing from the sliaft'in another direction.

F or producing sharp impressions on the i stencils, the platen isprovided with a cellusections are, of course, readily replaceable bymerely sliding the old sectionv from the grooves of the metal strips72,73.

It yis'desirable to render the typed matter on a stencil visible, and,for this purpose,

an ink ribbony 30 is positioned to operate between they stencil-holderand the platen to print on the back of the stencil;A The ribbon is ledfrom onev of tworolls 84, 85 mounted between the side platesl 23, 24,around the platen to the other of said rolls, being guided by guiderollers 81, 82 and 83. .loll 34 is mounted vupon shafts 90 and 91supported in bearings 92 and 93 fixed to the side plates' and roll 85 issimilarly mounted on the side plates, being mounted upon shafts 94. and95 supported in bearings- 96 and 97A fixed to said side plates. The' inkribbon is wound at each end upon a ribbon-spool 102, 103, the latterbeing mounted on the ends of shafts 90 and 91, and 94 and 95, whichproject therein, and between flanges 98 and 99, and 100 and 101, fixedupon said shafts near the ends thereof. l/Vhen mounted betweentheflanges, the spools are held against movement relative to the flangesby a pin 105, fixedl to each flange and projecting into a groove 104formed in each end of the spools. rllhe ribbon-spools may be readilyinserted or withdrawn from their mounting, due to the fact thatone'flange of each roll 34, 85 (here shown as flanges 99 and 101) ismovable laterally, the shafts 91 andy 95 being drawn outwardly in theirbearings 93 and 97 by knobs 110, 111, against the action of springs 112and 113 interposed between the flange and the bearing. Said springs'also provide the necessary tension to take vup i any slack in the ribbonwhen it is being unwound.

As hereinbefore stated, the ink ribbon is wound upon one of the rolls34, 85 and` unwound from the other. the ribbon is designed to occursimultaneously with the line-feeding of the stencil, so as to present afresh surface to each succeeding line typed upon the stencil. Themovement of the ribbon is accomplished by fixing a ratchet 116, 117 toeach roll 84, 85, adjacent one of the side plates, one of said ratchetsbeing-'operated by a pawl member 120 pivoted at one end of a `lever 121,said lever being` connected' by a link 123 to an arm 124, which may befixed to the same hub The movement 50 as arm 52; so Lthat rotation ofthe shaft in line-feeding direction will rotatev both arms 52 and 124upwardly to raise the stencil frame and actuate the pawl member to driveone of the ratchets and wind the ink ribbon on the corresponding roll.Upon the return movement of the shaft and its attached arms, the pawlmember will not op.- erate the ribbon-rolls, the pawl riding idly overthe ratchet. It is apparent that, after a sufficient number of stencilshave been typed, the rib-bon will be completely wound upon one of therolls 84, 85 with which the ratchet is in engagement. The ribbon is ca-.

pable of further use, and, hence, means are provided for moving the pawlmember into engagement with the other ratchet, so that furtherline-feeding of the platen winds t-he roll which had previously beenunwound, andA thus avoids the necessity of manually rewinding theribbon. For this purpose, pawl member 120 is provided with two pawls 130and 131 force-operation with ratchets 116 and 117, respectively, thepawl member being swung about its pivot into engagement with one or theother of said ratchets depending upon which roll it is desired to wind.The pawl member is held in engagement with either ratchet, as desired,by a spring detent inthe form of a lever 132 pivoted upon lever 121, andhaving its upper end pressed by a spring 133 connected to its lower endinto either of two notches 13e/L, 135 in the pawl member. TWhen thedetent lodges in notch 1341, as in the Figure 1 position, the detentpresses downwardly upon surface 140 of notch 1311 to swing the pawlmember in a clockwise. direction, and hence into contact with ratchet1116; when the detent lodges in notch 135 it presses forwardly againstsurface 141 of the `notch to swing the pawl member in acounter-clockwise direction` and hence intov contact with ratchet 117.The pawl member remains in contact with the respective ratchet for anumberof line-spaces equal to the maximum number of lines on thestencil,'usually not more than three or four. However, by varying thedistance of the pawl-member from sleeve 122, i. e., by bringing itcloser to or further from ratchet 116, and by varying the size of theparts co-operating with the pawl-member accordingly, the pawls 13()l and131 can be brought into contact with the respective ratchets for alonger or shorter time to vary the number of line-spaces through whichthe respective ribbon-rolls are rotated.

The complete operation of the device is as follows: Assume the parts tobe in the position vshown in Figure 1. Upon actuation of the line-spacehandle `32 or the fingerwheels 31 in a line-feeding direction, shaft 30and hence arms 52, 53, 124C and 57 will be rotated. Arms 52 and 53 willraise the stencil-holding frame, due to the pin-and-slot connection.therewith;I arm 1211 will raise link 123 to rock lever 121 and opera-tepawl-member 12C-downwardly to wind the ink-ribbon on roll 84; and arm 57will rotate the' platen upwardly because of the spring-and-pinconnection therewith. Then the stencil has been fully typed, the shaft30 is rotated in the reverse direction to 'return all of the arms andtheir cofoperating parts to the in itial position shown in Figure 1.When the ink-ribbon has been fully wound on roll 84, the pawl-member 120is swung about its pivot to bring pawl 131 into engagementl with ratchet117. Thel ribbon will then be wound upon roll 85 when shaft 30 is oper--ated in line-feeding direction. lt willy be observed that, when theribbon is being wound upon roll 84, it` is `traveling past the front ofthe platen in a direction opposite to that ofthe stencil-holder. .Thisis not objectionable, however, since the stencil is slightly spaced fromthe platen, except when the type strikes, which wouldr prevent fouling.In any case, a clear ink impression is not-essential, the ink backingbeing merely for the purpose of rendering the stenciling visi-` ble. Asalready pointed out, and as v"shown in Figure-4, not more thanone-halffof the.

platen is utilizedy in they typing of stencils, `and'-therefore' theplaten `may be rotated through one-halfI a revolution to.' bring a'fresh part thereof into effective position.

The replacement ofthe Celluloid surface will beclear from thedescription. Vhen an inkribbon has been exhausted, it is woundupon onespool 102 or 103, which spool is released by drawing knob or 111outwardly, and a new spool or ribbon-.is inserted.` l.

Variations may be resorted to .within the scope of the invention, and`portions ofthe improvements'may be used without others.

'Having thus described jmy invention, I claim: i

1. In a typewriting machine, in combination, a platen-frame,a shaftjournaled therein, a platen mounted on said shaft, a stencilholdermounted for movement in front .of said platen, means for rline-spacingsaid stencil-holder, a pair of rolls mounted-in said `platen-frame,ribbon passing 'from one of lsaid rolls between said stencil-holder andplaten to the other of said rolls, a separate ratchet connected to'eachroll, r"a -paivldevice settable/ at will for co-operation with either ofsaid ratchets `to windithe ribbon upon the respective roll atline-spaceinter-- vals when operated, and means for operating said devicesin'iultaneously with the linespacing of the stencil-holder. f

f 2.' ln typewriti-ng machine, in combination, a platen-frame, a shaftjournaled therein, a platen mounted on said shaft, a' pair of rollsmounted in said frame, av ribbon passing from one of said rolls laroundsaid platenfto the other of said rolls, a sepa-rate .130

vaoA

unwind said ribbon fromthe other of said rolls when said device isoperated, and a connection between said device and said shaft wherebysaid device is operated when said-shaft is rotated in a line-feedingdirection.

3. In a typewriting machine, in combination, a platen-frame, a shaftjournaled therein, a platen mounted on said shaft, a pair of rollsmounted in said frame, a ribbon passing from one ofsaid rolls aroundsaid platen tothe other of said rolls, a ratchet fixed to each roll, adouble pawl-member having a separate pawl for engagement with eachratchet, said member being settable at will toengage either of saidratcliets to wind the ribbon upon the respective roll when said memberis operated, and a connection between said shaft and said member wherebysaidmember is operated whensaid shaft is rotated in a line-feedingdirection.

In a typewriting machine, in combination, a platen-frame, a shaftjournaled ther in, a platen mounted onsaidsliaft, a pair of rollsmounted in said frame, a ribbon passl ing'k from -one of said rollsaround said platen tokthe other `of said'rolls, a ratchet fixed to eachroll, ay double pawl-member having a separate pawl for engagement witheach ratchet, said member being settable at will 'l to engage either ofsaid ratchets to wind the ribbon upon the respective roll when saidmember is operated,.a detent, spring pressing said detent against saidmember for holding said member in engagement with either of saidratcliets, and a connection between said shaft and said member wherebysaidmember is operated when said shaft is rotated in a line-feedingdirection.

5. In a typewritiiig machine, in combination, a platen-frame, a shaftournaled therein, a platen mounted on said shaft, a pair of rollsmounted in said frame, a ribbon passing from one of said rolls aroundsaid platen to the other of said rolls, a ratchet fixed to each roll, adouble pawl-member having a separate pawl for engagement with eachratchet, said member being settable at will to engage either of saidratcliets to wind the ribbon upon the respective roll when said y memberis operated, said member having two notches, a detent, a spring pressingsaid detent into said notches, the lodging of said detent in one of saidnotches pressing said member into engagement with one of said ratchets,and the lodging of said detent in the other of said notches pressingsaid member into engagement with the other of said ratchets, and aconnection between said shaft and said member whereby said member isoperated when said shaft is rotated in a line-feeding direction.

6. ln a typewriting machine, in combination, a platen-frame, a shaftournaled therein, va platen mounted on said shaft, a pair of rollsmounted in said frame, a ribbon passing from one of said rolls aroundsaid platen to the other of said rolls, a ratchet xed to eac-h roll, adouble pawl-meinber having a separate pawl for engagementfwith eachratchet, said member being settable atA will to engage either of saidratchets towind the ribbon upon the respective roll when said member isoperated, said member having two notches, a detent, a spring pressingsaid detent into said notches, the lodging of said detent in one of saidnotches tending to-turn said member clockwise into engagement with oneof said ratchets, and the lodging of said detent in the other of saidnotches tending to turn said member counter-clockwise intoengagenientvwith the other of said ratchets, and a connection betweensaid shaft and said memberv whereby said member is operated when saidshaft is rotated in a linefeeding direction.'

7, In a typewriting machine, in combination, a platen-frame, a shaftjournaled therein, a platen mounted on said shaft, a pair of rollsmounted in said frame, a ribbon passing `from one of said rolls aroundsaid platen to the other of said rolls,`a ratchet lined to each roll, 'alever pivotally mounted on said machine, a double pawl-member pivotallymounted at one end of said lever, said meinber having a separate pawlfor engagementv with each ratchet, said member being settable at will toengage either of said ratchets to wind the ribbon upon the respectiveroll when said member is operated, and a connection between said shaftand the other end of said lever whereby said member is operated whensaid shaft is rotated in alinefeeding direction.

8. In a typewriting machine, in combina-- tion, a platen-frame, a shaftournaled therein, a platen mounted on said shaft, a pair of rollsmounted in said frame, a ribbon passing from one of said rolls aroundsaid platen to the other of said rolls, a ratchet fixed to each roll, alever pivotally mounted on said machine, a double pawl-member pivotallymounted at one end of said lever, said member having a. separate pawlfor engagement with each ratchet, said member being set-` table at willto engage either of said ratchets to wind the ribbon upon the respectiveroll when said member is operated, a second lever pivotally mounted onsaid first lever, a spring connecting the lower end of said second leverto said first lever and forcing the upper end of 'said second leverforwardly against4 said member for holding said member in engagementwith either of said ratchets, and a connection between said shaft andthe other end of said first lever whereby said `inem er is operated whensaid shaft is rotated in a line-feeding' direction.

9. In a typewriting machine, in combination, a platen-frame,asliaftjournaled therein, a line-space mechanism for said shaft, aplaten loosely mounted on said shaft, and releasable means forrotatively connecting together the shaft and the platen at relativelydifferent rotative positions, said means coinprising a member fined4upon the platen, a member fixed upon the shaft in proximity to theymember on the platen, one of said members having therein a plurality ofangularly-spaced holes, and a` pin movably I carried by the other ofsaid members to be engaged in one or another of said holes.

10. In a typewriting machine, in combina.- tion, a platen-frame. a shaftjournaled therein, a line-space mechanism for said shaft, a platenloosely mounted on said shaft and having an opening in an end thereof,an arm fixed to said shaft, a spring member fixed to said arm, and a pinfixed to said spring member and lodging in said opening to connect saidplaten to said shaft, so that said platen and shaft rotate as a unit.

11.k In a typewriting machine, in combina-- tion, a platen-frame, ashaft journaled therein, a line-space mechanism for `said shaft, aplaten loosely mounted on said shaft and havinga plurality of openingsin an end thereof, an arm fixed to said shaft, a spring member fixed tosaid arm, and a pin fixed to said spring member and lodging in one ofsaid openings .to connect said platen to said shaft, so that said platenand shaft rotate as a unit, said pin being withdrawable against theaction of said spring member to permit said platen to rotate to a newposition relative to the shaft, said pin engaging in anotherof saidopenings to fin said platen to said shaft in the new position.

12. In a typcwriting machine, in combination, a platen-frame, a shaftIjournaled therein, a line-space mechanism for said shaft, a

platen loosely mounted on said shaft, releasable means fixed to saidshaft and connected to said platen to cause said platen and shaft torotate as a unit. the same portion of the surface of the platenlengthwise thereof being subjected to repeated use until said portion isworn out, the releasing of said means permitting the rotation of theplaten to a new position relative to the 'shaft to bring a freshportionv of the platen surface into use, means whereby the releasablemeans may be connected to the platen to hold the latter in the 'newposition, and a hard surface for said platen comprising a plurality ofremovable sections lengthwise of the platen, the number of sectionscorresponding toy the effective positions of the platen relative to theshaft.

13. ln a typewritingmachine, in combination, a platen-frame, ashaftjournaled therein,v a line-space mechanism for said'v shaft, a platenloosely mounted on said shaft, releasable `means fixed to'said shaft andconnected to said platen to cause said platen and shaft to rotate as aunit,the same portion of the surface of the platenflengthwise thereofbeing subjectedto repeated use until` said portion is vworn out, thereleasing of said means permitting the rotation ofzthe platen to a new'position relative to the shaft to bringr a fresh lportionof theplatensurlface into use, means whereby the releasable means may beconnected tothe platen to hold thel latter in the new position, a hardsurface for said platen comprising a vplurality of removablecelluloidSect-ions lengthwise of the platen, and means lfor holding said sectionsagainst movement around said platen to permit withdrawal and insertionof said sections lengthwiseof the platen, the number of sectionscorresponding to the effective positions of the platen relative to theshaft. i

1d. ln a'typewriting.machine, in combination, a4 platen-frame, a shaftJournaled therein, line-space mechanism for said shaft, a platenlooselyl mounted' on said I shaft, and releasable means for rotativelyconnecting together the shaft and the platenv at relativelydifferentirotativ'e positions, said means comprising a member carried bythe platen and having therein a plurality o f Vangularly-spaced holes,an arm vcarried by the shaft in proximity to said member, and a pininovably carried by said arm to be engaged inV one or another of saidholes.

15. lin a typewriting machine, in'coinbination, a platen-frame, a shaftjournaled' therein, a line-space mechanism fork said los shaft, a,platen loosely! mounted on said i shaft, a stencil-holder mounted formovement in front vof said platen, means for hnespacin'g saidstencil-holder from said shaft,

lis

space intervals between said platen andv said stencil-holdervconcomit'antly with the linespacing of the platen and stencil-holder.

16. In a typewriting machine, in combination, a platen-frame, a shaftjournaled therein, a line-space mechanism for saidshaft, a' platenloosely mounted on said shaft', a stencil-holder mounted for movement infront of said platen, means for line-spacing said stencil-holder fromsaid shaft, means y(so,

Vfor line-spacing the platen from said shaft concomitantly with theline-spacing of the stencil-holder, said line-spacing means for theplaten including means for adjusting the rotative position of the platenrelatively to the stencil-holder, thereby to bring fresh vportions ofthe platen surface into use, and a pawl-and-ratchet device operated bysaid shaft and manually settable for feeding a ribbon in one directionor the other at will at line-space intervals between said platen `andsaid stencil-holder lconcomitant-ly with the line-spacing of the platenand stencilholder.

17. lIn a typewriting machine, in combination, aplaten-frame, a shaft jou-rnaled therein, a line-space lmechanism for said shaft, a platenloosely mounted on said shaft, a stencil-holder mounted for movement infront ofsaid platen, means for line-spacing said stencil-holder fromsaid shaft, and a releasable connecting device between said shaft andsaid platen effective to line-space the platen concomitantly with thelinespacing of said stencil-holder, and also effective for rotativelyadjusting the platen relatively to the stencil-holder to bring a freshportion of the platen surface into use, said device comprising a member'carried by the platen, another member carried by the shaft in proximityto the member carried by the platen, one of said members having aplurality of angularly-spaced pin-receiving holes therein, and a pinmovably carried by the other member to be selectively engaged in one oryanother ofsaid holes.

18. In a typewriti-ng machine, in combination, a platen-frame, a Shaftjournaled therein, a 'line-space mechanism for said shaft, a platenloosely mounted on said shaft, ka stencil-holder mounted for movement infront of said platen, means for line-spacing said stencil-holder fromsaid shaft, a releasable connecting device between said shaft and saidplaten effective to linespace the platen concomitantly wit-h theline-syncing of said stencil-holder, and also effective forrotativelynadjusting the platen relatively to the stencil-holder tobring-a fresh portion of the platen surface into use, said devicecomprising a member carried by the platen, another member carried by theshaft in proximity to the member carried by the platen, one of saidmembers having a'plurality of angularly-spaced pin-receiving holestherein, and a pin movably lcarried by the .other member to beselectively engaged in one or another of said holes, and means operatedby said shaft forffeeding a ribbon at line-space interv-als between saidplaten and said stencil-holder concomitantly v with the line-spacing ofthe platen and stencil-holder.

lrtree/',990

19. ln a typewriting machine, in combination, a platen-frame, a shaftjournaled therein, a line-space mechanism for said shaft, a platenloosely mounted on said shaft, a stencil-holder mountedfor movement infront of said platen, means for line-spacing said stencil-holder fromsaid shaft, a releasable connecting` device between said shaft andsaidplaten effective to linespace the platen concomitantly with theline-spacing of said stencil-holder, and also effective for rotativelyadjusting the platen relatively to the stencil-holder to bring a freshportion of the platen surface into use, said device comprising a membercarried by the platen, another' member carried by the shaft in proximityto the member carried by the platen, one of said members having` aplurality of singularly-spaced pin-receiving` holes therein, and a pinmovably carried by the other member to be selectively engaged in oneoranother of said holes, and means operated by said shaft for feeding aribbon at line-space intervals between said platen and saidstencil-holder concomitantly with the line-spacing of the platen andstencil-holder, and includingli,` a manuallysettable device forreversing the direction of the line-.space feed of the ribbon at will.

20. ln ka typewriting machine, in combination, a platen-frame, a shaftjournaled therein, a line-space mechanism for said shaft, a. platenloosely mounted on said shaft, a stencil-holder lmounted for movement infront-.of said platen, means: for line-spacing said `stencil-holder fromsaid shaft, a releasable connecting device between said shaft and saidplaten 'effective to linespace the platen concomitantly with theline-spacing of saidstencil-holder, and also effective for rotativelyadjust-ing the platen relatively to the stencil-holder to bring a freshportion of the platen surface into use, said device comprising a membercarriedby the platen,l another member carried by the shaft in proximityto the member carried by the platen. one of said members having.

a plurality of angularly-spaced pin-receiving holes therein, and apinmovably carried by thcl other member` to be selec-tively engaged in`one or another of said holes, and means operated by said shaft for'feeding a ribbon at line-space intervals between said platen and saidstencil-holder concomitantly with the line-spacing of the platen andstencil-holder, and including a manuallysettable pawl-and-ratchet deviceto cause said ribbon to be line-fed in one direction or the other atwill. f

ALFRED G. F. KURQ-VVSKI. `Witnesses JENNIE P. THORNE, MARGARET G.NooNAN.

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